Question

Option	(a)	(b)	(c)	(d)
(1)	Acidic Hydrolysis	$N{H}_3$ and $N{H}_{4}B{F}_4$	Hydrolysis	Heating only
(2)	Acidic Hydrolysis	$N{H}_{4}B{F}_4$	Hydrolysis	Heating in presence of $MgorFe$
(3)	Alkaline Hydrolysis	$N{H}_{4}B{F}_4$	Hydrolysis	Heating only
(4)	Alkaline Hydrolysis	$N_2+B{F}_3$	Hydrolysis	Heating in presence of $MgorFe$

For the following flow diagram:

Which of the following options correctly describes the reagents, products, and the reaction conditions given in parentheses as small alphabets?

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (B)

2

The option B correctly describes the reagents, products, and the reaction conditions given in parentheses as small alphabets.

$B(OH{)}_3+2N{H}_{4}H{F}_2\to N{H}_4[B{F}_4]+N{H}_3\uparrow +3H_{2}O$

$B_2{H}_6+6H_{2}O\to 2B(OH{)}_3+6H_2\uparrow$

Acidic hydrolysis of Borax gives $B(OH{)}_3$

$H_{3}B{O}_3$ on heating in presence of Mg or Fe gives Boron

$B(OH{)}_3\stackrel{inpresenceofMgorFe}{\to }B+H_{2}O+O_2$